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index.ts
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// We need to figure out how to pass a webex logger instance to these util files
/* globals RTCSessionDescription */
import window from 'global/window';
import sdpTransform from 'sdp-transform'; // https://github.com/clux/sdp-transform
import Metrics from '../metrics';
import LoggerProxy from '../common/logs/logger-proxy';
import StaticConfig from '../common/config';
import {
COMPLETE,
GATHERING,
AUDIO,
SDP,
ICE_STATE,
CONNECTION_STATE,
NETWORK_STATUS,
PEER_CONNECTION_STATE,
OFFER,
QUALITY_LEVELS,
REMOTE_VIDEO_CONSTRAINTS,
} from '../constants';
import BEHAVIORAL_METRICS from '../metrics/constants';
import {error, eventType} from '../metrics/config';
import MediaError from '../common/errors/media';
import ParameterError from '../common/errors/parameter';
import {InvalidSdpError} from '../common/errors/webex-errors';
import BrowserDetection from '../common/browser-detection';
import PeerConnectionUtils from './util';
const {isBrowser} = BrowserDetection();
/**
* @export
* @public
*/
const pc: any = {};
/**
* munges the bandwidth limit into the sdp
* @param {String} sdpLines
* @param {Number} index
* @returns {String}
*/
const insertBandwidthLimit = (sdpLines: any, index: number) => {
// eslint-disable-next-line no-warning-comments
// TODO convert to sdp parser
let limit;
let periodicKeyFrame = '';
if (sdpLines[index].search(AUDIO) !== -1) {
limit = StaticConfig.meetings.bandwidth.audio;
} else {
limit = StaticConfig.meetings.bandwidth.video;
periodicKeyFrame = SDP.PERIODIC_KEYFRAME;
sdpLines.splice(index + 2, 0, periodicKeyFrame);
}
sdpLines.splice(index + 1, 0, `${SDP.B_LINE}:${limit}`);
return sdpLines;
};
/**
* needed for calliope max-fs
* @param {String} sdp
* @param {String} [level=QUALITY_LEVELS.HIGH] quality level for max-fs
* @returns {String}
*/
const setRemoteVideoConstraints = (sdp: string, level: string = QUALITY_LEVELS.HIGH) => {
const maxFs = REMOTE_VIDEO_CONSTRAINTS.MAX_FS[level];
if (!maxFs) {
throw new ParameterError(
`setRemoteVideoConstraints: unable to set max framesize, value for level "${level}" is not defined`
);
}
const modifiedSdp = PeerConnectionUtils.adjustH264Profile(sdp, maxFs);
return modifiedSdp;
};
const setStartBitrateOnRemoteSdp = (sdp) => {
if (StaticConfig.meetings.bandwidth.startBitrate) {
sdp = sdp.replace(
/(\na=fmtp:(\d+).*profile-level-id=.*)/gi,
`$1;x-google-start-bitrate=${StaticConfig.meetings.bandwidth.startBitrate}`
);
}
return sdp;
};
/**
* checks that sdp has h264 codec in it
* @param {String} sdp
* @returns {boolean}
*/
const checkH264Support = (sdp: string) => {
// eslint-disable-next-line no-warning-comments
// TODO convert to sdp parser to read rtp.codec
const videoPresent = sdp.match(/\nm=video.*/g);
const h264Present = sdp.match(/\na=rtpmap:\d+\sH264.*/g);
if (videoPresent) {
return !!h264Present;
}
return true;
};
/**
* validates the sdp, checks port, candidates, and ice info
* @param {String} sdp
* @returns {String}
*/
const isSdpInvalid = (sdp: string) => {
const parsedSdp = sdpTransform.parse(sdp);
for (const mediaLine of parsedSdp.media) {
if (!mediaLine.candidates || mediaLine.candidates?.length === 0) {
LoggerProxy.logger.error(
'PeerConnectionManager:index#isSdpInvalid --> iceCandidate: Ice candidate never completed'
);
return 'iceCandidate: Ice gathering never completed';
}
if (SDP.BAD_MEDIA_PORTS.includes(mediaLine.port)) {
LoggerProxy.logger.error(
'PeerConnectionManager:index#isSdpInvalid --> iceCandidate: Found invalid port number for the ice candidate'
);
return 'iceCandidate: Found invalid port number for the ice candidate';
}
if (!mediaLine.icePwd || !mediaLine.iceUfrag) {
LoggerProxy.logger.error(
'PeerConnectionManager:index#isSdpInvalid --> iceCandidate: ice ufrag and password not found'
);
return 'iceCandidate: ice ufrag and password not found';
}
}
return '';
};
/**
* munges the bandwidth into the sdp
* @param {String} sdp
* @returns {String}
*/
const limitBandwidth = (sdp: string) => {
// TODO convert to sdp parser
let offerSdp = sdp;
let sdpLines = offerSdp.split(SDP.CARRIAGE_RETURN);
for (let i = 0; i < sdpLines.length; i += 1) {
if (sdpLines[i].search(SDP.M_LINE) !== -1) {
sdpLines = insertBandwidthLimit(sdpLines, i);
}
}
offerSdp = sdpLines.join(SDP.CARRIAGE_RETURN);
return offerSdp;
};
/**
* makes sure the screen pc sdp has content:slides for server
* @param {RTCPeerConnection} screenPc
* @returns {RTCPeerConnection}
*/
pc.setContentSlides = (screenPc: any) => {
if (screenPc && screenPc.sdp) {
screenPc.sdp += `${SDP.A_CONTENT_SLIDES}${SDP.CARRIAGE_RETURN}`;
}
return screenPc;
};
/**
* handles ice trickling and establishes ICE connection onto peer connection object
* @param {Object} peerConnection
* @param {Object} options
* @param {String} options.remoteQualityLevel
* @returns {Promise.RTCPeerConnection}
*/
pc.iceCandidate = (
peerConnection: any,
{
remoteQualityLevel,
}: {
remoteQualityLevel: string;
}
) =>
new Promise<void>((resolve, reject) => {
const now = Date.now();
const doneGatheringIceCandidate = () => {
// @ts-ignore
const miliseconds = parseInt(Math.abs(Date.now() - now), 4);
peerConnection.sdp = limitBandwidth(peerConnection.localDescription.sdp);
peerConnection.sdp = PeerConnectionUtils.convertCLineToIpv4(peerConnection.sdp);
peerConnection.sdp = setRemoteVideoConstraints(peerConnection.sdp, remoteQualityLevel);
const invalidSdpPresent = isSdpInvalid(peerConnection.sdp);
if (invalidSdpPresent) {
LoggerProxy.logger.error(
'PeerConnectionManager:index#iceCandidate --> SDP not valid after waiting.'
);
reject(new InvalidSdpError(invalidSdpPresent));
}
LoggerProxy.logger.log(
`PeerConnectionManager:index#iceCandidate --> Time to gather ice candidate ${miliseconds} miliseconds`
);
resolve();
};
// If ice has already been gathered
if (peerConnection.iceGatheringState === COMPLETE) {
doneGatheringIceCandidate();
}
peerConnection.onIceGatheringStateChange = () => {
if (peerConnection.iceGatheringState === COMPLETE) {
// @ts-ignore
doneGatheringIceCandidate(peerConnection);
}
if (peerConnection.iceGatheringState === GATHERING) {
LoggerProxy.logger.log(
'PeerConnectionManager:index#onIceGatheringStateChange --> Ice state changed to gathering'
);
}
};
peerConnection.onicecandidate = (evt) => {
if (evt.candidate === null) {
// @ts-ignore
doneGatheringIceCandidate(peerConnection);
} else {
LoggerProxy.logger.log(
`PeerConnectionManager:index#onicecandidate --> Candidate ${evt.candidate?.type} ${evt.candidate?.protocol} ${evt.candidate?.address}:${evt.candidate?.port}`
);
}
};
peerConnection.onicecandidateerror = (event) => {
// we can often get ICE candidate errors (for example when failing to communicate with a TURN server)
// they don't mean that the whole ICE connection will fail, so it's OK to ignore them
LoggerProxy.logger.error(
'PeerConnectionManager:index#onicecandidateerror --> ignoring ice error:',
event
);
};
});
/**
* swapping tracks
* @param {Object} peerConnection
* @param {Object} track
* @returns {undefined}
*/
pc.replaceTrack = (peerConnection: any, track: any) => {
try {
const senders = peerConnection.getSenders();
if (senders.length > 0) {
senders.forEach((sender) => {
if (sender.track && sender.track.kind === track.kind) {
sender.replaceTrack(track);
}
});
}
} catch (err) {
LoggerProxy.logger.error(
`PeerConnectionManager:index#replaceTrack --> Error replacing track, ${err}`
);
}
};
/**
* adding streams to peerConnection
* @param {Object} peerConnection
* @param {Object} stream
* @returns {undefined}
*/
pc.addStream = (peerConnection: any, stream: any) => {
try {
if (stream && !isBrowser('edge')) {
const tracksPresent =
peerConnection.getSenders &&
peerConnection.getSenders().find((sender) => sender.track != null);
if (tracksPresent) {
stream.getTracks().forEach((track) => {
pc.replaceTrack(peerConnection, track);
});
return;
}
stream.getTracks().forEach((track) => {
peerConnection.addTrack(track, stream);
});
// // TODO : may come back disable addTracks for chrome they are moving back to addStream
// // https://bugs.chromium.org/p/chromium/issues/detail?id=764414
// // https://bugs.chromium.org/p/chromium/issues/detail?id=738918#c7
// peerConnection.addStream(stream);
} else if (isBrowser('edge')) {
peerConnection.addStream(stream);
}
} catch (err) {
LoggerProxy.logger.error(
`PeerConnectionManager:index#addStream --> Error adding stream, error: ${error}`
);
}
};
/**
* setting the remote description
* @param {Object} peerConnection
* @param {String} typeStr
* @param {String} remoteSdp
* @param {String} meetingId
* @returns {undefined}
*/
pc.setRemoteSessionDetails = (
peerConnection: any,
typeStr: string,
remoteSdp: string,
meetingId: string
) => {
LoggerProxy.logger.log(
`PeerConnectionManager:index#setRemoteSessionDetails --> Setting the remote description type: ${typeStr}State: ${peerConnection.signalingState}`
);
let sdp = remoteSdp;
// making sure that the remoteDescription is only set when there is a answer for offer
// or there is a offer from the server
if (!sdp) {
Metrics.postEvent({
event: eventType.REMOTE_SDP_RECEIVED,
meetingId,
data: {
canProceed: false,
errors: [
Metrics.generateErrorPayload(2001, true, error.name.MEDIA_ENGINE, 'missing remoteSdp'),
],
},
});
}
if (
peerConnection.signalingState === SDP.HAVE_LOCAL_OFFER ||
(peerConnection.signalingState === SDP.STABLE && typeStr === SDP.OFFER)
) {
sdp = setStartBitrateOnRemoteSdp(sdp);
if (!peerConnection.enableExtmap) {
sdp = sdp.replace(/\na=extmap.*/g, '');
}
// remove any xtls candidates
sdp = sdp.replace(/^a=candidate:.*xTLS.*\r\n/gim, '');
return (
peerConnection
.setRemoteDescription(
new window.RTCSessionDescription({
type: typeStr,
sdp,
})
)
.then(() => {
if (peerConnection.signalingState === SDP.STABLE) {
Metrics.postEvent({
event: eventType.REMOTE_SDP_RECEIVED,
meetingId,
});
}
})
// eslint-disable-next-line @typescript-eslint/no-shadow
.catch((error) => {
LoggerProxy.logger.error(
`Peer-connection-manager:index#setRemoteDescription --> ${error} missing remotesdp`
);
const metricName = BEHAVIORAL_METRICS.PEERCONNECTION_FAILURE;
const data = {
correlation_id: meetingId,
reason: error.message,
stack: error.stack,
};
const metadata = {
type: error.name,
};
Metrics.sendBehavioralMetric(metricName, data, metadata);
return Metrics.postEvent({
event: eventType.REMOTE_SDP_RECEIVED,
meetingId,
data: {
canProceed: false,
errors: [
Metrics.generateErrorPayload(
2001,
true,
error.name.MEDIA_ENGINE,
'missing remoteSdp'
),
],
},
});
})
);
}
return Promise.reject(new MediaError('PeerConnection in wrong state'));
};
/**
* Create offer with a valid parameter
* @param {Object} peerConnection
* @param {Object} meetingProperties
* @param {string} meetingProperties.meetingId
* @param {string} meetingProperties.remoteQualityLevel LOW|MEDIUM|HIGH
* @param {string} meetingProperties.enableRtx
* @param {string} meetingProperties.enableExtmap
* @returns {RTCPeerConnection}
*/
pc.createOffer = (
peerConnection: any,
{
meetingId,
remoteQualityLevel,
enableRtx,
enableExtmap,
}: {
meetingId: string;
remoteQualityLevel: string;
enableRtx: string;
enableExtmap: string;
}
) => {
LoggerProxy.logger.log('PeerConnectionManager:index#createOffer --> creating a new offer');
// saving the extMap State to use in setRemoteDescription
peerConnection.enableExtmap = enableExtmap;
return (
peerConnection
.createOffer()
.then((description) => {
// bug https://bugs.chromium.org/p/chromium/issues/detail?id=1020642
// chrome currently generates RTX line irrespective of whether the server side supports it
// we are removing apt as well because its associated with rtx line
if (!enableRtx) {
description.sdp = description.sdp.replace(/\r\na=rtpmap:\d+ rtx\/\d+/g, '');
description.sdp = description.sdp.replace(/\r\na=fmtp:\d+ apt=\d+/g, '');
}
return peerConnection.setLocalDescription(description);
})
.then(() => pc.iceCandidate(peerConnection, {remoteQualityLevel}))
.then(() => {
if (!checkH264Support(peerConnection.sdp)) {
throw new MediaError(
'openH264 is downloading please Wait. Upload logs if not working on second try'
);
}
if (!enableExtmap) {
peerConnection.sdp = peerConnection.sdp.replace(/\na=extmap.*/g, '');
}
pc.setContentSlides(peerConnection);
Metrics.postEvent({
event: eventType.LOCAL_SDP_GENERATED,
meetingId,
});
return peerConnection;
})
// eslint-disable-next-line @typescript-eslint/no-shadow
.catch((error) => {
LoggerProxy.logger.error(`Peer-connection-manager:index#createOffer --> ${error}`);
if (error instanceof InvalidSdpError) {
Metrics.sendBehavioralMetric(BEHAVIORAL_METRICS.INVALID_ICE_CANDIDATE, {
correlation_id: meetingId,
code: error.code,
reason: error.message,
});
} else {
const metricName = BEHAVIORAL_METRICS.PEERCONNECTION_FAILURE;
const data = {
correlation_id: meetingId,
reason: error.message,
stack: error.stack,
};
const metadata = {
type: error.name,
};
Metrics.sendBehavioralMetric(metricName, data, metadata);
}
Metrics.postEvent({
event: eventType.LOCAL_SDP_GENERATED,
meetingId,
data: {
canProceed: false,
errors: [
// @ts-ignore
Metrics.generateErrorPayload(2001, true, error.name.MEDIA_ENGINE),
],
},
});
pc.close(peerConnection);
throw error;
})
);
};
/**
* rollBack local description in peerconnection
* @param {Object} peerConnection
* @returns {Promise.RTCPeerConnection}
*/
pc.rollBackLocalDescription = (peerConnection: any) =>
peerConnection
// @ts-ignore
.setLocalDescription(new RTCSessionDescription({type: SDP.ROLLBACK}))
.then(() => peerConnection)
.catch((err) => {
LoggerProxy.logger.error(`Peer-connection-manager:index#setLocalDescription --> ${err} `);
// @ts-ignore
return Promise.error(err);
});
/**
* @param {Object} params {
* @param {Boolean} params.offerToReceiveAudio
* @param {Boolean} params.offerToReceiveVideo
* @param {string} params.offerSdp
* @param {MediaStream} params.stream
* @param {Object} meetingProperties
* @param {string} meetingProperties.meetingId
* @param {string} meetingProperties.remoteQualityLevel LOW|MEDIUM|HIGH
* @returns {Promise.<Array>} [MediaSDP, ScreenSDP]
*/
pc.updatePeerConnection = (
params: {
offerToReceiveAudio: boolean;
offerToReceiveVideo: boolean;
offerSdp: string;
stream: MediaStream;
peerConnection: any;
},
{
meetingId,
remoteQualityLevel,
}: {
meetingId: string;
remoteQualityLevel: string;
}
) => {
LoggerProxy.logger.log(
`PeerConnectionManager:index#updatePeerConnection --> updating the peerConnection with params: ${params}`
);
const {peerConnection, offerSdp} = params;
return pc
.createAnswer(
{
peerConnection,
offerSdp: offerSdp[0],
},
{meetingId, remoteQualityLevel}
)
.then((peerconnection) => {
// The content slides should also be set when we are sending inactive
pc.setContentSlides(peerconnection);
return Promise.resolve([peerconnection.sdp]);
});
};
/**
* @param {Object} params
* @param {Object} params.peerConnection
* @param {Object} params.sdpConstraints
* @param {Object} meetingProperties
* @param {string} meetingProperties.meetingId
* @param {string} meetingProperties.remoteQualityLevel LOW|MEDIUM|HIGH
* @returns {RTCPeerConnection} peerConnection
*/
pc.createAnswer = (
params: {
peerConnection: any;
sdpConstraints: object;
offerSdp: any;
},
{
meetingId,
remoteQualityLevel,
}: {
meetingId: string;
remoteQualityLevel: string;
}
) => {
const {peerConnection} = params;
// TODO: Some times to many mercury event comes at the same time
// Need to maintain state of peerconnection
if (peerConnection.signalingState === SDP.HAVE_REMOTE_OFFER) {
return Promise.resolve(peerConnection);
}
return (
pc
.setRemoteSessionDetails(peerConnection, OFFER, params.offerSdp, meetingId)
.then(() => peerConnection.createAnswer(params.sdpConstraints))
.then((answer) => peerConnection.setLocalDescription(answer))
.then(() => pc.iceCandidate(peerConnection, {remoteQualityLevel}))
.then(() => {
peerConnection.sdp = limitBandwidth(peerConnection.localDescription.sdp);
peerConnection.sdp = PeerConnectionUtils.convertCLineToIpv4(peerConnection.sdp);
peerConnection.sdp = setRemoteVideoConstraints(peerConnection.sdp, remoteQualityLevel);
if (!checkH264Support(peerConnection.sdp)) {
throw new MediaError(
'openH264 is downloading please Wait. Upload logs if not working on second try'
);
}
return peerConnection;
})
// eslint-disable-next-line @typescript-eslint/no-shadow
.catch((error) => {
if (error instanceof InvalidSdpError) {
Metrics.sendBehavioralMetric(BEHAVIORAL_METRICS.INVALID_ICE_CANDIDATE, {
correlation_id: meetingId,
});
} else {
const metricName = BEHAVIORAL_METRICS.PEERCONNECTION_FAILURE;
const data = {
correlation_id: meetingId,
reason: error.message,
stack: error.stack,
};
const metadata = {
type: error.name,
};
Metrics.sendBehavioralMetric(metricName, data, metadata);
}
LoggerProxy.logger.error(
`PeerConnectionManager:index#setRemoteSessionDetails --> Error creating remote session, error: ${error}`
);
})
);
};
/**
* shut down the peer connection
* @param {Object} peerConnection
* @returns {undefined}
*/
pc.close = (peerConnection: any) => {
// peerConnection.close() fails on firefox on network changes and gives a Dom exception
// To avoid this we have added a try catch block.
// Please refer to https://bugzilla.mozilla.org/show_bug.cgi?id=1274407 for more information
LoggerProxy.logger.log(
'PeerConnectionManager:index#close --> pc: close() -> attempting to close the peer connection'
);
if (peerConnection && peerConnection.connectionState === PEER_CONNECTION_STATE.CLOSED) {
LoggerProxy.logger.log(
'PeerConnectionManager:index#close --> pc: close() -> connection already closed'
);
return Promise.resolve();
}
LoggerProxy.logger.log(
'PeerConnectionManager:index#close --> pc: close() -> closing the mediaPeerConnection'
);
return Promise.resolve().then(() => {
if (peerConnection && peerConnection.close) {
peerConnection.close();
}
});
};
pc.setPeerConnectionEvents = (meeting) => {
// In case ICE fail
const {peerConnection} = meeting.mediaProperties;
const connectionFailed = () => {
if (meeting.reconnectionManager.iceState.resolve) {
// DISCONNECTED state triggers first then it goes to FAILED STATE
// sometimes the failed state can happen before 10 seconds (Which is the timer for the reconnect for ice disconnect)
meeting.reconnectionManager.iceState.resolve();
}
meeting.reconnect({networkDisconnect: true});
Metrics.postEvent({
event: eventType.ICE_END,
meeting,
data: {
canProceed: false,
errors: [
// @ts-ignore
Metrics.generateErrorPayload(2004, false, error.name.MEDIA_ENGINE),
],
},
});
meeting.uploadLogs({
file: 'peer-connection-manager/index',
function: 'connectionFailed',
});
Metrics.sendBehavioralMetric(BEHAVIORAL_METRICS.CONNECTION_FAILURE, {
correlation_id: meeting.correlationId,
locus_id: meeting.locusId,
});
};
peerConnection.oniceconnectionstatechange = () => {
LoggerProxy.logger.info(
'PeerConnectionManager:index#setPeerConnectionEvents --> ICE STATE CHANGE.'
);
switch (peerConnection.iceConnectionState) {
case ICE_STATE.CHECKING:
LoggerProxy.logger.info(
'PeerConnectionManager:index#setPeerConnectionEvents --> ICE STATE CHECKING.'
);
Metrics.postEvent({event: eventType.ICE_START, meeting});
break;
case ICE_STATE.COMPLETED:
LoggerProxy.logger.info(
'PeerConnectionManager:index#setPeerConnectionEvents --> ICE STATE COMPLETED.'
);
break;
case ICE_STATE.CONNECTED:
// Ice connection state goes to connected when both client and server sends STUN packets and
// Established connected between them. Firefox does not trigger COMPLETED and only trigger CONNECTED
Metrics.postEvent({event: eventType.ICE_END, meeting});
Metrics.sendBehavioralMetric(BEHAVIORAL_METRICS.CONNECTION_SUCCESS, {
correlation_id: meeting.correlationId,
locus_id: meeting.locusId,
});
meeting.setNetworkStatus(NETWORK_STATUS.CONNECTED);
meeting.reconnectionManager.iceReconnected();
LoggerProxy.logger.info(
'PeerConnectionManager:index#setPeerConnectionEvents --> ICE STATE CONNECTED.'
);
break;
case ICE_STATE.CLOSED:
LoggerProxy.logger.info(
'PeerConnectionManager:index#setPeerConnectionEvents --> ICE STATE CLOSED.'
);
break;
case ICE_STATE.DISCONNECTED:
meeting.setNetworkStatus(NETWORK_STATUS.DISCONNECTED);
meeting.reconnectionManager.waitForIceReconnect().catch(() => {
LoggerProxy.logger.info(
'PeerConnectionManager:index#setPeerConnectionEvents --> ICE STATE DISCONNECTED. Automatic Reconnection Timed Out.'
);
connectionFailed();
});
LoggerProxy.logger.info(
'PeerConnectionManager:index#setPeerConnectionEvents --> ICE STATE DISCONNECTED.'
);
break;
case ICE_STATE.FAILED:
LoggerProxy.logger.info(
'PeerConnectionManager:index#setPeerConnectionEvents --> ICE STATE FAILED.'
);
// notify of ice failure
// Ice failure is the only indicator currently for identifying the actual connection drop
// Firefox takes sometime 10-15 seconds to go to failed state
connectionFailed();
break;
default:
break;
}
};
peerConnection.onconnectionstatechange = () => {
LoggerProxy.logger.info(
'PeerConnectionManager:index#setPeerConnectionEvents --> CONNECTION STATE CHANGE.'
);
switch (peerConnection.connectionState) {
case CONNECTION_STATE.NEW:
LoggerProxy.logger.info(
'PeerConnectionManager:index#setPeerConnectionEvents --> CONNECTION STATE NEW.'
);
break;
case CONNECTION_STATE.CONNECTING:
LoggerProxy.logger.info(
'PeerConnectionManager:index#setPeerConnectionEvents --> CONNECTION STATE CONNECTING.'
);
break;
case CONNECTION_STATE.CONNECTED:
LoggerProxy.logger.info(
'PeerConnectionManager:index#setPeerConnectionEvents --> CONNECTION STATE CONNECTED.'
);
break;
case CONNECTION_STATE.CLOSED:
LoggerProxy.logger.info(
'PeerConnectionManager:index#setPeerConnectionEvents --> CONNECTION STATE CLOSED.'
);
break;
case CONNECTION_STATE.DISCONNECTED:
LoggerProxy.logger.info(
'PeerConnectionManager:index#setPeerConnectionEvents --> CONNECTION STATE DISCONNECTED.'
);
break;
case CONNECTION_STATE.FAILED:
LoggerProxy.logger.info(
'PeerConnectionManager:index#setPeerConnectionEvents --> CONNECTION STATE FAILED.'
);
// Special case happens only on chrome where there is no ICE FAILED event
// only CONNECTION FAILED event gets triggered
connectionFailed();
break;
default:
break;
}
};
};
export default pc;